<nb-card size="xsmall">
  <nb-card-header>
    <a href="#" class="a-icon-magin"><i class="ion-help-buoy"></i></a>
    地下水超采漏斗发展演变
  </nb-card-header>
  <nb-card-body>
    <div class="info">
      <div echarts [options]="chartOption" class="demo-chart" style="height:260px"></div>
    </div>
  </nb-card-body>
</nb-card>
